The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
Israel's Dead Sea is 1,312 feet below sea level.
48
Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
The Sahara desert expands at about 1km per month.
90
The Caspian Sea is also classed as the world's largest lake.
52